Regex to the rescue...
Spoiler
As the problem said don't solve the general case for Part 2!
A bit of thinking and then broke Part 2 into 2 blocks which was a lot easier!
The generated Regexes are horrible but work
A bit of thinking and then broke Part 2 into 2 blocks which was a lot easier!
The generated Regexes are horrible but work
Very similar to the both of you and I think I've made more iterative macros this month than I ever have in day to day Alteryx use!
Spoiler
Workflow:
For part 2 I evaluated for "^[042]+[031]+$" where the [042]+ was longer than the [031]+.
Macro
For part 2 I evaluated for "^[042]+[031]+$" where the [042]+ was longer than the [031]+.
Macro
Also a "bit" of regex... I used two iteratives: one to generate rule 0 and another to beautify the regex expression (remove extra brackets).
The same workflow works for both parts, after manual update of the rules... It took me a lot of trial and error to get it working for the updated rule 11. But regular-expression.info to the rescue.
Spoiler
The updated rules for part II:
rule 8 is the same as (42)+
and rule 11 has a recursive (which took me ages to finally get it working):
Mixed feelings about hardcoding the new rules--e.g. this would not work for a random rule that has a loop, but:
The updated rules for part II:rule 8 is the same as (42)+
and rule 11 has a recursive (which took me ages to finally get it working):
Mixed feelings about hardcoding the new rules--e.g. this would not work for a random rule that has a loop, but:
Final Regex
I'm not sure I understood everything I did about Regex but eventually I got there, discovering recursive regex on the way.
